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This 3.5mm TRRS terminal block cable features 4-pole standard design, compatible with stereo audio and microphone input output needs. Adopting solderless screw terminal structure, it allows fast and easy wire connection without soldering. The 4Pin bolt terminal provides stable clamping for wire core, ensuring long-term reliable signal conduction. 32cm moderate length avoids cable clutter and fits most audio equipment installation scenarios. Perfect for headphones, speakers, audio balun devices, industrial audio systems and DIY audio wiring modification. 2-pack practical package meets replacement and multi-device layout demands.